Floor cleaning device



FIG. 1 is a top, front and right side perspective view of a floor cleaning device showing my new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a top plan view thereof,

FIG. 4 is a bottom plan view thereof,

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a left side elevational view thereof; and,

FIG. 7 is a rear elevational view thereof.

The details shown in broken lines form no part of the claimed design. 

CLAIM The ornamental design for a floor cleaning device, as shown. 